单选题：I'd better go and have a try _____ there is an advertisemen..

_____ you ask many different questions _____be able to acquire all the information you need to know.A. Unless; will you B. Unless; you will C. Only if; will you D. Only if; you will

You ought to have a good rest_____ you've finished the work.A. in case B. so that C. now that D. even though

Skipping breakfast can also cause you to overeat. _____ your body is in a slow state, it won't be able to burn the extra calories very efficiently.A. UnlessB. ThoughC. Since D. Before

—God！My cell phone is missing.—You ________ have left it at home.I heard you telephone our daughter in the bathroom.A．shall B．mustC．wouldD．could

She is a quiet girl at school，but sometimes she _____be very naughty．A．shouldB．wouldC．can D．will